Wordpress Pagination - Bootstrap style

functions.php

<?php

//Custom pagination
function wp_bootstrap_pagination()
{
    global $wp_query;
    $big = 999999999;
    $current = max(1, get_query_var('paged'));

    $paginate =  paginate_links(array(
        'base' => str_replace($big, '%#%', get_pagenum_link($big)),
        'format' => '?paged=%#%',
        'current' => $current,
        'total' => $wp_query->max_num_pages,
        'type' => 'array',
        'prev_text'    => __('« '),
        'next_text'    => __(' »')
    ));

    if($paginate){
        echo '<ul class="pagination">';
        foreach($paginate as $page){
            if(strpos($page, 'current')){
                echo '<li class="active">'.$page.'</li>';
            }else{
                echo '<li>'.$page.'</li>';
            }
        }
        echo '</ul>';
    }
}